Testing device



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TESTING DEVICE).

(Application med Dec. 17, 189s.)

(No Model.)

L e STATES RALPH HOVARD PINKHAM, OF VVAKEFIELD, MASSACHUSETTS.'

TESTING DEvioE.

SPECIFICATION forming part of Letters Patent No. 623,335, dated April18, 1899.

Application filed December 17,1898. Serial No. 699,547. (No model.)

To @ZZ whom it may concern'.-

Be it known that I, RALPH HOWARD PINK- HAM, a citizen ot' the UnitedStates, residing at lVakeeld, in the county of Middlesex andCommonwealth of Massachusetts, have invented certain new and usefulImprovements in Testing Devices, of which the following is aspecication.

My invention is a hydraulic ground-testing device, and comprises a tubeor pipe having a shoe upon its lower end of conical shape adapted to bedriven into the ground, with means for supplying a stream of water tooutlets in the shoe, the shoe being supplied with inlet-openings and aninner dischargepipe adapted to permit the upward flow of the water, withthe sediment stirred up or loosened by the downward current, so that theground may be tested for various purposes.

My invention consists particularly of an improved shoe of novelconstruction, and, secondly, of an improved head for receiving thesupply of water for the downward current, all as hereinafter moreparticularly described.

In the drawing the gure shows a central vertical section through theapparatus.

The shoe shown at A is of conical shape, terminating in a point, andthis is provided with elongated openings tapering downwardly, as shownat a, these openings allowing for the upward flow of the water. The shoeis provided'with a series of openings near its upper end, as at b,laterally-extending webs c separating the upper and lower sets ofopenings, intended to strengthen the construction of the shoe andprevent it from collapsing under the pressure exerted in driving it intothe earth. The shoe has an internal threadcut on an annular extension d,and into this is screwed a pipe or tube e. The upper end of this pipe eis connected to a head B, which is of box or cylindrical form and isprovided with two openings inv its top,

one to receive the supply-pipe C for the downward current, and throughthe other passes the pipe D for the upward current,

this pipe curving in the head and passing downwardly within the pipe h.The lower struction prevents any disarrangement of thel parts and veryeffectually serves to test the lower strata for gold-bearing earth orfor similar purposes at a minimum expense. Hot or cold water may beused, according to the requirement of the work,

That I claim isl. A testing device consisting of a shoe of conical shapehaving two sets of openings, one set being arranged above the other andindependent pipes in connection with said openin gs, substantially asdescribed.

2. In a testing-machine, a shoe of conical shape having a series ofelongated openings in its lower part and a series of lateral openings inits upper part, and independent pipes in connection withsaid openings,substantially as described.

3. In a testing device, a shoe of conical shape having a series ofopenings in its lower part, a ledge formed in the interior, an exitpipesupported by said ledge, a series of laterally-extending openings in theupper part of the shoe and a supply-pipe surrounding the exit-pipe andcommunicating with the lateral openings, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

RALPH HOWARD PINK'HAh/I.

I'Vitne'sses:

C. H. WELCH, F. LAZZARO.

